CN110207122A - A kind of refining furnace oxygen lance and its application method for preventing firing function with anti-backfire - Google Patents
A kind of refining furnace oxygen lance and its application method for preventing firing function with anti-backfire Download PDFInfo
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- CN110207122A CN110207122A CN201910561324.5A CN201910561324A CN110207122A CN 110207122 A CN110207122 A CN 110207122A CN 201910561324 A CN201910561324 A CN 201910561324A CN 110207122 A CN110207122 A CN 110207122A
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- Prior art keywords
- pipe
- oxygen
- gas
- oxygen lance
- backfire
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- 239000001301 oxygen Substances 0.000 title claims abstract description 107
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 107
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 105
- 238000010304 firing Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000007670 refining Methods 0.000 title claims description 17
- 239000007921 spray Substances 0.000 claims abstract description 92
- 239000003034 coal gas Substances 0.000 claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 238000009826 distribution Methods 0.000 claims abstract description 4
- 238000001816 cooling Methods 0.000 claims description 41
- 239000007789 gas Substances 0.000 claims description 15
- 239000000498 cooling water Substances 0.000 claims description 13
- 238000007599 discharging Methods 0.000 claims description 8
- 239000000725 suspension Substances 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- CNKHSLKYRMDDNQ-UHFFFAOYSA-N halofenozide Chemical compound C=1C=CC=CC=1C(=O)N(C(C)(C)C)NC(=O)C1=CC=C(Cl)C=C1 CNKHSLKYRMDDNQ-UHFFFAOYSA-N 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 claims description 3
- 238000011105 stabilization Methods 0.000 claims description 3
- 238000010992 reflux Methods 0.000 claims description 2
- 230000009977 dual effect Effects 0.000 abstract description 3
- 238000004880 explosion Methods 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 11
- 239000010959 steel Substances 0.000 description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000005496 tempering Methods 0.000 description 6
- 239000000567 combustion gas Substances 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000007664 blowing Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 241000233855 Orchidaceae Species 0.000 description 2
- 238000005474 detonation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 208000021760 high fever Diseases 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 210000000038 chest Anatomy 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009851 ferrous metallurgy Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000009491 slugging Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
- C21C5/4606—Lances or injectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/20—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone
- F23D14/22—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/34—Burners specially adapted for use with means for pressurising the gaseous fuel or the combustion air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
- F23D14/78—Cooling burner parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction means
- F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
- F23D14/82—Preventing flashback or blowback
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
- C21C5/4606—Lances or injectors
- C21C2005/4626—Means for cooling, e.g. by gases, fluids or liquids
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Air Supply (AREA)
Abstract
The invention discloses a kind of with the anti-high-efficiency precision furnace oxygen lance and its application method for firing function of anti-backfire, the device includes the spray head of gun barrel main body and gun barrel body end, gun barrel main body is made of the casing of multilayer centerline collineation, casing is followed successively by compressed air hose, oxygen pipe, coal gas of converter pipe, water pipe and outer tube from inside to outside, and three fire tubes kept burning day and night in equilateral triangle distribution are equipped in the clip cavity between oxygen pipe and coal gas of converter pipe；Compared with prior art, the present invention can occur to be tempered to avoid oxygen lance in flame-out moment fires phenomenon；The coal gas for guaranteeing that oxygen lance sprays is lighted in time, avoids ignition point that explosion phenomenon occurs；It is dual combustion-supporting to coal gas progress by oxygen and compressed air, improve the pre- thermal efficiency.
Description
Technical field
The present invention relates to technical field of ferrous metallurgy, specifically, are related to a kind of with the anti-height for firing function of anti-backfire
Imitate refining furnace oxygen lance and its application method.
Background technique
Refining furnace oxygen lance is mainly used for blowing to steel scrap in refining furnace, and oxygen lance spray head is installed on oxygen lance wall
End, spray head periphery are water-cooling structure, pass through the end of reasonable cooling water cooling spray.
Sinosteel Anshan Research Institute of Thermo-energy Co., Ltd. has applied for Chinese utility model patent on 01 27th, 2015,
Which disclose a kind of for melting the device of residual iron in ladle or iron packet, residue, including by gun barrel ontology and oxygen lance nozzle
The oxygen lance of composition, oxygen lance nozzle are fixed on gun barrel ontology front end, and gun barrel ontology is disposed with central oxygen pipe, coal from inside to outside
Tracheae, peripheral oxygen pipe, internal layer water pipe and outer layer water pipe, oxygen lance nozzle and central oxygen pipe, gas pipe and peripheral oxygen tube head export
Corresponding position sets central oxygen spout, gas port and peripheral oxygen spout respectively, passes through oxygen lance spraying between internal layer water pipe and outer layer water pipe
Head connection.
Above-mentioned apparatus has the function of oxygen rifle and oxygen burner, can meet simultaneously and melt residual iron, residue in ladle or iron packet
Requirement；Flexible operation, work efficiency is high, it is easy to accomplish do mechanization operation；But there is huge safety in use
Hidden danger, oxygen lance is easy to flow backward into gun barrel body lumen in the combustion gas that flame-out instantaneous high-temperature molten bath generates causes tempering to fire,
Casualty accident occurs；Furthermore the coal gas that spray head sprays cannot be lighted in time, be easy to happen explosion in ignition point.
Jiangsu Bi Ruichi Science and Technology Ltd. has applied for that application No. is CN201811415012.5 on November 26th, 2018
Chinese invention patent, which disclose it is a kind of with burning and two kinds of functions of oxygen blast converter oxygen lance, by interior one layer of steel
Pipe, interior two layers of steel pipe, interior compound steel pipe, outer layer pipe, gas jet orifice, oxygen spray orifice, into oxygen branch pipe, into combustion gas branch pipe, water inlet
The components such as branch pipe and return branch composition.When fritting preheating scrap: what the combustion gas and oxygen spray orifice sprayed by gas jet orifice sprayed
Partial oxidation burns in converter, generates high fever；When blowing: the main flow oxygen sprayed by oxygen spray orifice, blowing molten steel refining
Steel.
Above-mentioned apparatus generates high fever by combustion gas and oxygen combustion, can increase considerably steel scrap charge weight, reduces steel-making
Cost；The quality that furnace temperature is high, slugging is fast, the steel-making time is short, increases the yield of steel, improves steel；But the device is by single
Pure oxygen progress is combustion-supporting, and sometimes the theoretical temperature combustion of pure oxygen combustion-supporting can be higher than technique requirement temperature, can not meet production needs；
Furthermore there is also the risks that tempering fires for the device.
Oxygen lance can only being reduced by arranging special messenger to look over one's shoulder oxygen pressure in the prior art, the probability that tempering fires occurs,
In the anti-solution for firing upper not substance of anti-backfire, this problem annoyings always those skilled in the art, so
It is a kind of with the anti-high-efficiency precision furnace oxygen lance and its application method for firing function of anti-backfire it is necessary to invent.
Summary of the invention
It is a kind of with the anti-height for firing function of anti-backfire the technical problem to be solved by the present invention is to against the above deficiency, provide
Refining furnace oxygen lance and its application method are imitated, tempering can occur in flame-out moment to avoid oxygen lance and fire phenomenon；Guarantee oxygen combustion
The coal gas that rifle sprays is lighted in time, avoids ignition point that explosion phenomenon occurs；By oxygen and compressed air to coal gas into
Row is dual combustion-supporting, improves the pre- thermal efficiency；It is compact-sized rationally, convenient for the lifting of single unit system and traversing.
In order to solve the above technical problems, the invention adopts the following technical scheme:
A kind of high-efficiency precision furnace oxygen lance for preventing firing function with anti-backfire, the spray including gun barrel main body and gun barrel body end
Head, the gun barrel main body are made of the casing of multilayer centerline collineation, and described sleeve pipe is followed successively by compressed air hose, oxygen from inside to outside
Pipe, coal gas of converter pipe, water pipe and outer tube；The spray head includes the gas-jet of cooling spray and internal setting.
Further, three are equipped in the clip cavity between the oxygen pipe and coal gas of converter pipe in the kept burning day and night of equilateral triangle distribution
Fire tube.
Further, it is set on the cooling spray there are four through hole, intermediate through hole is taper spray orifice, remaining three
A through hole is evenly arranged on around taper spray orifice.
Further, described gas-jet one end and the end of oxygen pipe are fixed by grafting, the appearance of gas-jet
Face is equipped with several and plays the fin of cyclonic action, by Morse's taper reality between fin surface and the taper spray orifice of cooling spray
Now it is connected with each other.
Further, the gas-jet is single hole Lavalle spray head.
Further, it is sequentially installed with oxygen bend pipe in the gun barrel main body, compressed air bend pipe, ever-burning flame bend pipe, turns
Producer gas bend pipe, water inlet bend pipe and Discharging bent-tube；The compressed air bend pipe one end is empty with compression after the tube wall of oxygen pipe
Tracheae inner cavity is connected；The ever-burning flame bend pipe is taken over by ever-burning flame to be connected with ever-burning flame tube cavity, ever-burning flame adapter tube set
It is located at around oxygen pipe, the both ends of ever-burning flame adapter tube are blocked by the end cap and flange welded.
Further, the one end of three root long open fire pipes is fixed on the flange；Suspension hook is also equipped on flange.
Further, the cooling spray is cast by red copper, Cu >=99.85%.
A kind of application method with the anti-high-efficiency precision furnace oxygen lance for firing function of anti-backfire, specifically includes following step
It is rapid:
Step 1: preparation, the fire tube kept burning day and night in oxygen lance, which is in, persistently lights state；Compressed air hose, which is in, continues jet
State, end of the compressed air through compressed air hose, sprays after sequentially passing through gas-jet, cooling spray；
Step 2: open cooling water inflow and outflow valve, flow 280t/h, cooling water pressure >=1.2Mpa cooling water by
Bend pipe intake subsequently into the inner cavity of water pipe, cooling water reverse reflux after cooling spray in inner cavity is discharged by outer tube；
Step 3: the control valve that turns on the gas-fire, flow 4000Nm3/h, the coal gas that pressure is 10000-12000pa is successively by turning
Producer gas bend pipe, coal gas of converter pipe then pass through the eddy flow fin of gas-jet, finally spray from the taper spray orifice of cooling spray
Out, it is lighted immediately by fire tube kept burning day and night after ejection；
Step 4: open oxygen control valve, flow 1400Nm3/h, oxygen pressure be 0.4Mpa oxygen successively pass through oxygen bend pipe,
Oxygen pipe, gas-jet Lavalle hole after, from the end face of cooling spray after being mixed in the taper spray orifice of cooling spray with coal gas
It sprays, the Mach 2 ship 1.6 of cooling spray；
Step 5: oxygen lance is vertically lowered by suspension hook by boom hoisting after the flame stabilization burning of cooling spray end face
To the top of refining furnace, oxygen lance starts to blow.
After the invention adopts the above technical scheme, compared with prior art, have the advantage that
Compressed air hose carries out jet work in the All Time that refining furnace is run in the present invention, prevents the gas of the complexity such as coal gas
Body enters gun barrel body lumen and tempering is caused to fire；
Ever-burning flame pipe can be lighted after spray head sprays coal gas for guaranteeing in the present invention, be easy igniting, can additionally prevent furnace
Thorax internal cause cause specific, which causes to refine in burner hearth, burning gases, the danger of detonation occurs in igniting, fire tube kept burning day and night can will not
Controllable burning gases are burnt up at any time；
Oxygen and compressed air carry out coal gas dual combustion-supporting in the present invention, different theoretical temperature combustions may be implemented, into one
Step improves the pre- thermal efficiency；Oxygen lance is 3-4 hours to the preheating time of 80t refining furnace steel scrap in the prior art, using the present invention
Afterwards the scrap steel preheating time boil down to 0.1-1 hours in 80t refining furnace, the pre- thermal efficiency is greatly improved；
O-ring seal form is used in the present invention between gas passage and intake tunnel, between gun barrel main body and cooling spray only
One of weld seam only needs disassembled simply when replacing cooling spray；
The device compact overall structure is reasonable, convenient for carried out in smelting process lifting and it is traversing.
The present invention is described in detail with reference to the accompanying drawings and examples.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
Fig. 2 is the enlarged drawing in the portion I in the present invention；
Fig. 3 is the left view of Fig. 1；
Fig. 4 is the A direction view in Fig. 1；
Fig. 5 is the B direction view in Fig. 1；
Fig. 6 is the left view of gas-jet in Fig. 2；
In figure, 1- cooling spray, 2- gas-jet, 3- outer tube, 4- water pipe, 5- fire tube kept burning day and night, 6- compressed air hose, 7- oxygen pipe,
8- coal gas of converter pipe, the first clamping ring of 9-, 10- water outlet pipe, the second clamping ring of 11-, 12- water inlet adapter tube, 13- cover board, 14- method
Orchid, 15- ever-burning flame adapter tube, 16- end cap, 17- nut, 18- spring washer, 19- suspension hook, 20- oxygen bend pipe, 21- compressed air bend pipe,
22- ever-burning flame bend pipe, 23- coal gas of converter bend pipe, 24- water inlet bend pipe, 25- Discharging bent-tube, 26- fixed plate.
Specific embodiment
For a clearer understanding of the technical characteristics, objects and effects of the present invention, this hair of Detailed description of the invention is now compareed
Bright specific embodiment.
Embodiment 1 is a kind of with the anti-high-efficiency precision furnace oxygen lance for firing function of anti-backfire
As Fig. 1 and Fig. 2 jointly shown in, the present invention provide it is a kind of with the anti-high-efficiency precision furnace oxygen lance for firing function of anti-backfire,
For oxygen lance by gun barrel main body and sprinkler composition, spray head is installed on the end of gun barrel main body；Gun barrel main body is made of five layers of casing, and five
The centerline collineation of layer casing, five layers of casing are followed successively by compressed air hose 6, oxygen pipe 7, coal gas of converter pipe 8, water pipe 4 from inside to outside
With outer tube 3, reinforced using right quantity and the uniform gusset of arrangement between five layers of casing；The oxygen pipe 7 and coal gas of converter pipe 8
Between clip cavity in be equipped with three in equilateral triangle distribution fire tubes kept burning day and night 5.
As Fig. 2, Fig. 5 and Fig. 6 jointly shown in, the spray head includes cooling spray 1 and gas-jet 2, the cooling spray 1
It is fixed on the end of outer tube 3 and coal gas of converter pipe 8, cooling spray 1 is fixed with outer tube 3 by welding manner, cooling spray 1
It is fixed with coal gas of converter pipe 8 by inserting mode, is sealed at plug-in position by the way that multiple O-ring seals are arranged；It is described cold
But it is set on spray head 1 there are four through hole, intermediate through hole is taper spray orifice, after taper spray orifice is used to mix oxygen and coal gas
It sprays, remaining three through hole is evenly arranged on around taper spray orifice, for fixing the end of fire tube 5 kept burning day and night；The coal gas spray
First 2 are set to the inside of cooling spray 1, and are fixed with the end of oxygen pipe 7 by grafting, and the outer surface of gas-jet 2 is set
There are several to play the fin of cyclonic action, is realized between fin surface and the taper spray orifice of cooling spray 1 by Morse's taper
It is connected with each other；The gas-jet 2 is single hole Lavalle spray head.
As Fig. 1 and Fig. 3 jointly shown in, be sequentially installed in the gun barrel main body oxygen bend pipe 20, compressed air bend pipe 21,
Ever-burning flame bend pipe 22, coal gas of converter bend pipe 23, water inlet bend pipe 24 and Discharging bent-tube 25；Described 20 one end of oxygen bend pipe and oxygen pipe 7
One end is welded and fixed, and the two inner cavity is connected, and 20 other end of oxygen bend pipe is installed in fixed plate 26；The compressed air bend pipe
21 one ends are welded and fixed after the tube wall of oxygen pipe 7 with compressed air hose 6, in compressed air bend pipe 21 and compressed air hose 6
Chamber is connected, and 21 other end of compressed air bend pipe is installed in fixed plate 26；Described 22 one end of ever-burning flame bend pipe is welded on kept burning day and night
On the tube wall of fiery adapter tube 15, ever-burning flame bend pipe 22 is connected with the inner cavity of ever-burning flame adapter tube 15, and ever-burning flame adapter tube 15 is set in oxygen
Around pipe 7, the both ends of ever-burning flame adapter tube 15 are blocked by the end cap 16 and flange 14 of welding, also solid on the flange 14
Surely there is the end of three root long open fire pipes 5, ever-burning flame bend pipe 22 is connected by ever-burning flame adapter tube 15 with 5 inner cavity of fire tube kept burning day and night, institute
The other end for stating ever-burning flame bend pipe 22 is installed in fixed plate 26；Described 23 one end of coal gas of converter bend pipe is welded on coal gas of converter pipe
On 8 tube wall, coal gas of converter bend pipe 23 is connected with the inner cavity of coal gas of converter pipe 8, and the other end of coal gas of converter bend pipe 23 passes through
Ring flange is installed in fixed plate 26；Described water inlet 24 one end of bend pipe is welded on the tube wall of water adapter tube 12, bend pipe 24 of intaking
It is connected with the inner cavity of water inlet adapter tube 12, the both ends of water inlet adapter tube 12 pass through the cover board 13 of welding and the welding of the second clamping ring 11
Fixed, second clamping ring 11 is welded on the outside of the end of water pipe 4, and water inlet bend pipe 24 passes through in water inlet adapter tube 12 and water pipe 4
Chamber is connected；The other end of the water inlet bend pipe 24 is installed in fixed plate 26 by ring flange；Described 25 one end of Discharging bent-tube
It is welded on the tube wall of water outlet pipe 10, Discharging bent-tube 25 is connected with the inner cavity of water outlet pipe 10, the both ends of water outlet pipe 10
Portion is fixed by welding on the second clamping ring 11 and the first clamping ring 9, and first clamping ring 9 is welded in one end of outer tube 3
Portion, Discharging bent-tube 25 are connected by water outlet pipe 10 with 3 inner cavity of outer tube；The other end of the Discharging bent-tube 25 passes through ring flange
It is installed in fixed plate 26.
As Fig. 1 and Fig. 4 jointly shown in, suspension hook 19 is installed, two ends of suspension hook 19 pass through method in the gun barrel main body
It is fixed after the bolt hole of orchid 14 by nut 17 and spring washer 18.
The cooling spray 1 is cast by red copper, Cu >=99.85%.
After the gun barrel main body is connect with spray head, through the 2.5Mpa water pressure test, pressure maintaining 40 minutes, with non-leakage for qualification.
The compressed air hose 6 carries out jet work in the All Time that refining furnace is run, and prevents the complexity such as coal gas
Gas enters gun barrel body lumen and tempering is caused to fire.
The fire tube kept burning day and night 5 is lighted in the All Time that refining furnace is run, after guaranteeing that gas-jet 2 sprays coal gas
It can light, be easy igniting, can additionally prevent refining burner hearth internal cause cause specific from leading to have burning gases in burner hearth, in point
The danger of detonation occurs when fiery, fire tube 5 kept burning day and night can burn up uncontrollable burning gases.
A kind of application method with the anti-high-efficiency precision furnace oxygen lance for firing function of anti-backfire of embodiment 2
When oxygen lance is used for 80T refining furnace, specifically used process such as following steps:
Step 1: preparation, the fire tube kept burning day and night 5 in oxygen lance, which is in, persistently lights state；Compressed air hose 6 is in lasting spray
Gaseity, end of the compressed air through compressed air hose 6 spray after sequentially passing through gas-jet 2, cooling spray 1；
Step 2: open cooling water inflow and outflow valve, flow 280t/h, cooling water pressure >=1.2Mpa cooling water by
Bend pipe 24 intake through adapter tube 12 of intaking, subsequently into the inner cavity of water pipe 4, cooling water reversely returns after cooling spray 1 in inner cavity
Stream, is discharged by outer tube 3；
Step 3: the control valve that turns on the gas-fire, flow 4000Nm3/h, the coal gas that pressure is 10000-12000pa is successively by turning
Producer gas bend pipe 2, coal gas of converter pipe 8 then pass through the eddy flow fin of gas-jet 2, finally from the taper spray orifice of cooling spray 1
It sprays, is lighted immediately by fire tube 5 kept burning day and night after ejection；
Step 4: opening oxygen control valve, flow 1400Nm3/h, the oxygen that oxygen pressure is 0.4Mpa successively passes through oxygen bend pipe
20, behind the Lavalle hole of oxygen pipe 7, gas-jet 2, from cooling spray 1 after being mixed in the taper spray orifice of cooling spray 1 with coal gas
End face spray, the Mach 2 ship 1.6 of cooling spray 1；
Step 5: when 1 end face of cooling spray flame stabilization burning after, by boom hoisting by suspension hook 19 by oxygen lance it is vertical under
The top of refining furnace is dropped to, oxygen lance starts to blow.
The above is the citing of best mode for carrying out the invention, wherein the part that do not address in detail is that this field is common
The common knowledge of technical staff.Protection scope of the present invention is based on the contents of the claims, any based on technology of the invention
The equivalent transformation of enlightenment and progress, also within protection scope of the present invention.
Claims (9)
1. a kind of with the anti-high-efficiency precision furnace oxygen lance for firing function of anti-backfire, including gun barrel main body and gun barrel body end
Spray head, it is characterised in that: the gun barrel main body is made of the casing of multilayer centerline collineation, and described sleeve pipe is followed successively by from inside to outside
Compressed air hose (6), oxygen pipe (7), coal gas of converter pipe (8), water pipe (4) and outer tube (3)；The spray head includes cooling spray (1)
And the gas-jet (2) of internal setting.
2. as described in claim 1 a kind of with the anti-high-efficiency precision furnace oxygen lance for firing function of anti-backfire, it is characterised in that:
Three fire tubes kept burning day and night (5) in equilateral triangle distribution are equipped in clip cavity between the oxygen pipe (7) and coal gas of converter pipe (8).
3. as described in claim 1 a kind of with the anti-high-efficiency precision furnace oxygen lance for firing function of anti-backfire, it is characterised in that:
It is set on the cooling spray (1) there are four through hole, intermediate through hole is taper spray orifice, remaining three through hole is evenly arranged on
Around taper spray orifice.
4. as described in claim 1 a kind of with the anti-high-efficiency precision furnace oxygen lance for firing function of anti-backfire, it is characterised in that:
Described gas-jet (2) one end and the end of oxygen pipe (7) are fixed by grafting, gas-jet (2) if outer surface be equipped with
Dry is played the fin of cyclonic action, realizes phase by Morse's taper between fin surface and the taper spray orifice of cooling spray (1)
It connects.
5. as described in claim 1 a kind of with the anti-high-efficiency precision furnace oxygen lance for firing function of anti-backfire, it is characterised in that:
The gas-jet (2) is single hole Lavalle spray head.
6. as described in claim 1 a kind of with the anti-high-efficiency precision furnace oxygen lance for firing function of anti-backfire, it is characterised in that:
Oxygen bend pipe (20), compressed air bend pipe (21), ever-burning flame bend pipe (22), coal gas of converter are sequentially installed in the gun barrel main body
Bend pipe (23), water inlet bend pipe (24) and Discharging bent-tube (25)；Compressed air bend pipe (21) one end passes through the pipe of oxygen pipe (7)
It is connected after wall with compressed air hose (6) inner cavity；The ever-burning flame bend pipe (22) passes through ever-burning flame adapter tube (15) and fire tube kept burning day and night
(5) inner cavity is connected, and ever-burning flame adapter tube (15) is set in around oxygen pipe (7), and the both ends of ever-burning flame adapter tube (15) pass through welding
End cap (16) and flange (14) blocked.
7. as claimed in claim 6 a kind of with the anti-high-efficiency precision furnace oxygen lance for firing function of anti-backfire, it is characterised in that:
The one end of three root long open fire pipes (5) is fixed on the flange (14)；Suspension hook (19) are also equipped on flange (14).
8. as described in claim 1 a kind of with the anti-high-efficiency precision furnace oxygen lance for firing function of anti-backfire, it is characterised in that:
The cooling spray (1) is cast by red copper, Cu >=99.85%.
9. a kind of application method with the anti-high-efficiency precision furnace oxygen lance for firing function of anti-backfire, it is characterised in that: specific packet
Include following steps:
Step 1: preparation, the fire tube kept burning day and night (5) in oxygen lance, which is in, persistently lights state；Compressed air hose (6) is in and holds
Continuous jet state, end of the compressed air through compressed air hose (6) sequentially passes through gas-jet (2), cooling spray (1) sprays afterwards
Out；
Step 2: open cooling water inflow and outflow valve, flow 280t/h, cooling water pressure >=1.2Mpa cooling water by
Intake the inner cavity of bend pipe (24) subsequently into water pipe (4), cooling water reverse reflux after cooling spray (1) in inner cavity, by outer
Pipe (3) is discharged；
Step 3: the control valve that turns on the gas-fire, flow 4000Nm3/h, the coal gas that pressure is 10000-12000pa is successively by turning
Producer gas bend pipe (2), coal gas of converter pipe (8), then pass through the eddy flow fin of gas-jet (2), finally from cooling spray (1)
Taper spray orifice sprays, and is lighted immediately by fire tube kept burning day and night (5) after ejection；
Step 4: opening oxygen control valve, flow 1400Nm3/h, the oxygen that oxygen pressure is 0.4Mpa successively passes through oxygen bend pipe
(20), behind the Lavalle hole of oxygen pipe (7), gas-jet (2), cooling spray (1) taper spray orifice in mixed with coal gas after from
The end face of cooling spray (1) sprays, the Mach 2 ship 1.6 of cooling spray (1)；
Step 5: oxygen lance is erected by suspension hook (19) by boom hoisting after the flame stabilization burning of cooling spray (1) end face
Directly drop to the top of refining furnace, oxygen lance starts to blow.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910561324.5A CN110207122A (en) | 2019-06-26 | 2019-06-26 | A kind of refining furnace oxygen lance and its application method for preventing firing function with anti-backfire |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910561324.5A CN110207122A (en) | 2019-06-26 | 2019-06-26 | A kind of refining furnace oxygen lance and its application method for preventing firing function with anti-backfire |
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|---|---|
| CN110207122A true CN110207122A (en) | 2019-09-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910561324.5A Pending CN110207122A (en) | 2019-06-26 | 2019-06-26 | A kind of refining furnace oxygen lance and its application method for preventing firing function with anti-backfire |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113983463A (en) * | 2021-12-08 | 2022-01-28 | 北京瑞晨航宇能源科技有限公司 | Pure oxygen combustor and combustion method |
| CN114410883A (en) * | 2021-12-30 | 2022-04-29 | 钢铁研究总院 | Oxygen lance for cooperatively injecting oxygen, powder and inert gas and injection method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1421640A (en) * | 2001-11-22 | 2003-06-04 | 裕富宝厨具设备（深圳）有限公司 | Blower cyclonic burner |
| CN201281333Y (en) * | 2008-05-28 | 2009-07-29 | 胡占胜 | Energy saving burner |
| CN201296766Y (en) * | 2008-11-10 | 2009-08-26 | 王�华 | Multifunctional top lance for vacuum refining of liquid steel |
| CN202066007U (en) * | 2011-01-01 | 2011-12-07 | 河北钢铁股份有限公司承德分公司 | Coal gas-oxygen burning lance device with oxygen and compressed air capable of supporting combustion simultaneously |
| CN202709106U (en) * | 2012-07-12 | 2013-01-30 | 穆瑞力 | Ceramic kiln burner with long burning fire |
| CN104593541A (en) * | 2015-01-27 | 2015-05-06 | 中钢集团鞍山热能研究院有限公司 | Device for melting ladle or residual iron and residual slag in ladle and application method of device |
| CN106834600A (en) * | 2017-03-30 | 2017-06-13 | 山东崇盛冶金氧枪有限公司 | A kind of coherent oxygen lance |
| CN210624521U (en) * | 2019-06-26 | 2020-05-26 | 山东崇盛冶金氧枪有限公司 | Refining furnace oxygen combustion gun with functions of backfire prevention and explosion prevention |
-
2019
- 2019-06-26 CN CN201910561324.5A patent/CN110207122A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1421640A (en) * | 2001-11-22 | 2003-06-04 | 裕富宝厨具设备（深圳）有限公司 | Blower cyclonic burner |
| CN201281333Y (en) * | 2008-05-28 | 2009-07-29 | 胡占胜 | Energy saving burner |
| CN201296766Y (en) * | 2008-11-10 | 2009-08-26 | 王�华 | Multifunctional top lance for vacuum refining of liquid steel |
| CN202066007U (en) * | 2011-01-01 | 2011-12-07 | 河北钢铁股份有限公司承德分公司 | Coal gas-oxygen burning lance device with oxygen and compressed air capable of supporting combustion simultaneously |
| CN202709106U (en) * | 2012-07-12 | 2013-01-30 | 穆瑞力 | Ceramic kiln burner with long burning fire |
| CN104593541A (en) * | 2015-01-27 | 2015-05-06 | 中钢集团鞍山热能研究院有限公司 | Device for melting ladle or residual iron and residual slag in ladle and application method of device |
| CN106834600A (en) * | 2017-03-30 | 2017-06-13 | 山东崇盛冶金氧枪有限公司 | A kind of coherent oxygen lance |
| CN210624521U (en) * | 2019-06-26 | 2020-05-26 | 山东崇盛冶金氧枪有限公司 | Refining furnace oxygen combustion gun with functions of backfire prevention and explosion prevention |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113983463A (en) * | 2021-12-08 | 2022-01-28 | 北京瑞晨航宇能源科技有限公司 | Pure oxygen combustor and combustion method |
| CN114410883A (en) * | 2021-12-30 | 2022-04-29 | 钢铁研究总院 | Oxygen lance for cooperatively injecting oxygen, powder and inert gas and injection method |
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